ARRAY WAVEGUIDE GRATING

摘要

A method of designing a relatively low order array waveguide grating, the method including the steps of using as a basis first and second symmetrical array waveguide grating designs having different, relatively high orders but common, symmetrical waveguide configurations along their half-way lines, and combining respective halves of said first and second array waveguide grating designs in opposing orientations so as to create an array waveguide grating of relatively low order.